1/* FPU control word definitions.  Stub version.
 2   Copyright (C) 2000-2025 Free Software Foundation, Inc.
 3   This file is part of the GNU C Library.
 4
 5   The GNU C Library is free software; you can redistribute it and/or
 6   modify it under the terms of the GNU Lesser General Public
 7   License as published by the Free Software Foundation; either
 8   version 2.1 of the License, or (at your option) any later version.
 9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#ifndef _FPU_CONTROL_H
20#define _FPU_CONTROL_H
21
22#include <features.h>
23
24/* These bits are reserved are not changed.  */
25#define _FPU_RESERVED 0x0707FFFC
26
27/* The fdlibm code requires no interrupts for exceptions.  Don't
28   change the rounding mode, it would break long double I/O!  */
29#define _FPU_DEFAULT  0x00000000 /* Default value.  */
30
31/* Type of the control word.  */
32typedef unsigned int fpu_control_t;
33
34/* Macros for accessing the hardware control word.  */
35#define _FPU_GETCW(cw)  __asm__ __volatile__ ("efpc %0" : "=d" (cw))
36#define _FPU_SETCW(cw)  __asm__ __volatile__ ("sfpc %0" : : "d" (cw))
37
38/* Default control word set at startup.  */
39extern fpu_control_t __fpu_control;
40
41#endif /* _FPU_CONTROL_H */